Cell Transport Benchmark Review

A plasma membrane receives its overall structure from _______. Hint: it is mostly made up of this molecule

• the number of protein channels embedded in the membrane

• the arrangement of the hydrophobic and hydrophilic ends of the phospholipids

• the types of proteins that are attached to the surface of the membrane

• the types of carbohydrates attached to proteins on the surface

How are channel and carrier proteins in the plasma membrane alike? Hint: what is the function?

• Both cause the phospholipid bilayer to form a rigid membrane for a cell.

• Both use energy to continuously move water molecules out of a cell.

• Both directly connect the membrane to the nucleus of a cell.

• Both allow for the flow of molecules into and out of a cell.

The plasma membrane allows All of the following Except _____. Hint: Which one would cause the cell to shrink or to explode?

• unlimited flow of water into or out of the cell

• unlimited flow of heat into or out of the cell

• the flow of oxygen into or out of the cell

• the flow of light into or out of the cell

Tags

NGSS.HS-LS1-3

Active transport differs from passive transport because______. Hint: What is the most important energy molecule in a cell?

• Only active transport requires ATP.

• Only active transport moves small particles.

• Only active transport relies on a plasma membrane.

• Only active transport allows substances to leave a cell.

Which transport mechanisms require the formation of a vesicle to transport material into or out of a cell? Hint: Which word parts mean into/out of a cell?

• diffusion and osmosis

• exocytosis and calcium pumps

• exocytosis and endocytosis

• diffusion and facilitated diffusion

Which cell process is best modeled by the diagram?

• diffusion

• endocytosis

• exocytosis

• facilitated diffusion

The indicated protein is part of a cell membrane. What is the most likely purpose of this protein? Hint: it forms an opening in the membrane

• It manufactures phospholipids to repair membrane damage.

• It allows passage of particles into and out of the cell.

• It attracts unbalanced electrical charges in the cell’s environment.

• It releases stored chemical energy in membrane carbohydrates.

All of these are functions of the plasma membrane except:

• allows waste to exit a cell

• catalyzes the formation of product in a chemical reaction

• allows chemicals for cellular respiration to enter the cell

• regulates the movement of water into and out of a cell

A function of the proteins embedded in the plasma membrane is ________ Hint: they form openings in the membrane

• They provide instructions for the processes in the cell.

• They selectively allow certain particles into and out of the cell.

• They store the energy required by the rest of the membrane to perform its functions.

• They attract charges in the cell’s environment to give the cell a net charge.

What is another title for this diagram? Hint: what is the movement of water across the plasma membrane called?

• Active Transport in a Cell

• exocytosis in a cell

• Facilitated Diffusion Across a Membrane

• Osmosis Across a Membrane